Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aeee471d19e7b0a…

MALICIOUS

PDF

39.2 KB Created: 2020-07-31 22:27:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 072336d9414cd576475b42453a9c45f5 SHA-1: 9a8b883e0367b9cf52c4cfd53e9c4fdae35b3764 SHA-256: 9aeee471d19e7b0a2db69e1d02288ae6c60e92ed0e0fd143404178c6f8b186ad
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a reference to 'witches abroad pdf', suggesting a lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=witches+abroad+pdf
    • http://files.myvenandi.com/uploads/1/3/1/4/131453592/naxefemixifazefetagi.pdf
    • http://files.appalachianaxeworks.com/uploads/1/3/1/3/131380546/b6a4a130.pdf
    • http://files.greenbrierhistorical.org/uploads/1/3/2/8/132815220/jagovirimeko.pdf
    • https://cdn.shopify.com/s/files/1/0432/2335/1458/files/85447915236.pdf
    • https://cdn.shopify.com/s/files/1/0438/6376/9243/files/kunovufutuxesudaradutafep.pdf
    • https://cdn.shopify.com/s/files/1/0439/0594/1672/files/jedufo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/korijedisewigaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/tunid.pdf
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/1282782928.pdf
    • https://cdn.shopify.com/s/files/1/0441/0173/0456/files/83132228284.pdf
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/vugidefaliwexipinag.pdf
    • https://cdn.shopify.com/s/files/1/0440/5559/3110/files/51911365539.pdf
    • https://cdn.shopify.com/s/files/1/0431/5404/7137/files/46971985407.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b58.bin
358f37f05b6795633d85961b94f7d893abce882ee60dc93addfc56e820174439		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B58 5364 bytes
font_01_sfnt_off00006d9a.bin
a97be7918c9a51219a5a8e3126925f08be109853a7fdda29269708a7da3db292		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9A 10296 bytes

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